.submit-btn {
    display: inline-block;
    outline: none;
    border: 0;
    width: 280px;
    height: 50px;
    font-size: 20px;
    color: #fff;
    background-color: rgba(222, 125, 44, 100);
    border-radius: 10px;
    margin: auto;
    animation: btnLoad .5s linear 1;
}

@keyframes btnLoad {
    from{
        transform: translateY(50px);
    }
    to{
        transform: translateY(0px);
    }
}